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Acanthogobius Flavimanus (Yellowfin Goby)

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Acanthogobius Flavimanus (Yellowfin Goby) Yellowfin Goby (Acanthogobius flavimanus) Ecological Risk Screening Summary U.S. Fish and Wildlife Service, 2014 Revised, September 2016, November 2018, July 2019 Web Version, 9/17/2019 Photo: OpenCage. Licensed under CC BY-SA 2.5. Available: http://opencage.info/pics/large_18690.asp. (November 2018). 1 Native Range and Status in the United States Native Range From Froese and Pauly (2018): “Northwest Pacific: Russian Far East (from Amur to Peter the Great Gulf), Korean Peninsula, Bohai Sea, Yellow Sea and East China Sea of China, and Hokkaido to Kyushu of Japan.” Froese and Pauly (2019) report the species as native in the following countries: China (including Hong Kong), Japan, South Korea, Russia, and Vietnam. 1 Status in the United States From Nico et al. (2019): “Established in coastal and inland waters of central and southern California.” “Introduced to California; the first records in that state were based on two specimens found in the Sacramento-San Joaquin Delta region, San Joaquin County, in early 1963. The first of these fish was trawled from the lower San Joaquin River near Venice Island, and the second specimen was taken from the Stockton Deepwater Channel near the Calaveras River (Brittan et al. 1963; Shapovalov et al. 1981). The species later was found in surrounding areas including Suisun, San Pablo, and San Francisco bays, the Sacramento Delta, the Yolo Bypass, Bolinas Lagoon, Delta- Mendota Canal, and the San Luis Reservoir in Alameda, Contra Costa, Marin, Merced, Napa (possibly), San Francisco, San Mateo, Santa Clara, Solano, and Sonoma counties (Brittan et al. 1970; Moyle 1976; Courtenay et al. 1986; Wang 1986; Sommer et al. 2001). Specimens also were taken in Elkhorn Slough, Monterey County (Kukowski 1972; Wang 1986), and Tomales Bay, Moss Landing Harbor, Golden Gate National Recreation Area, and Point Reyes National Seashore, Marin County (Miller and Lea 1972; Wang 1986; Tilmant 1999). The first records of this species in southern California were from the Los Angeles Harbor area, Los Angeles County, in 1977 (Haaker 1979); subsequently specimens were found in Long Beach Harbor and near the mouth of the Los Angeles River, Los Angeles County; in the San Gabriel River, Upper Newport Bay, and upstream to San Diego Creek, Orange County; and in Ballona Marsh and Mugu Lagoon (Haaker 1979; Allen 1982; Swift et al. 1993). This species was reported as rare or absent from other coastal areas of southern California including Malibu Lagoon, San Onofre, San Mateo, Las Pulgas, and Santa Margarita lagoons, and Morro Bay (Swift et al. 1993). In 1980, the species was reported as occurring in San Diego (perhaps extending as far south as Baja California Norte, Mexico) (Courtenay et al. 1986). Williams et al. (1998) reported them from southeastern San Diego Bay tidal marshes beginning in 1989, but gave the first date for San Diego County as 1984.” “In the San Francisco Estuary system yellowfin gobies are used as a baitfish (both fresh and frozen), being sold with both longjaw mudsucker (Gillichthys mirabillis) and staghorn sculpin (Leptocottus armatus) under the common names "mudsucker" or "bullhead".” Means of Introductions in the United States From Nico et al. (2019): “Initial and possibly later introductions were probably by way of ballast water carried in transoceanic ships (Brittan et al. 1963). It also is hypothesized that introduced gobies arrived as eggs on fouling organisms, such as oysters, growing on ship hulls (Hubbs and Miller 1965; Eschmeyer et al. 1983). Although first collected in 1963, the yellowfin goby was probably introduced into California in 1959 or 1960, likely about the same time as the chameleon goby (Brittan et al. 1970; Meng et al. 1994). Once established, this species spread in California, probably as a result of its own dispersal abilities, and sometimes with the aid of currents; in addition, dispersal may have resulted from the species' use as a baitfish (Brittan et al. 1970; Courtenay and Hensley [1979]).” 2 Remarks A previous version of this ERSS was published in 2014. 2 Biology and Ecology Taxonomic Hierarchy and Taxonomic Standing From ITIS (2018): “Kingdom Animalia Subkingdom Bilateria Infrakingdom Deuterostomia Phylum Chordata Subphylum Vertebrata Infraphylum Gnathostomata Superclass Osteichthyes Class Actinopterygii Subclass Neopterygii Infraclass Teleostei Superorder Acanthopterygii Order Perciformes Suborder Gobioidei Family Gobiidae Genus Acanthogobius Species Acanthogobius flavimanus (Temminck and Schlegel, 1845)” From Fricke et al. (2018): “Current status: Valid as Acanthogobius flavimanus (Temminck & Schlegel 1845). Gobiidae: Gobionellinae.” Size, Weight, and Age Range From Froese and Pauly (2018): “Max length : 30.0 cm TL male/unsexed; [Eschmeyer et al. 1983]; common length : 14.5 cm TL male/unsexed; [Hugg 1996]” From Fofonoff et al. (2018): “Male fish mature after one year and females in two years at 190-233 mm length (Suzuki et al. 1989; California Fish Website 2018).” From Nico et al. (2019): “In California, yellowfin gobies reach maturity in 2-3 years (Brittan et al. 1963; Baker 1979).” 3 From CABI (2018): “The average longevity of A. flavimanus is 3 years, but there have been examples of older specimens (Moyle, 2002).” Environment From Froese and Pauly (2018): “Marine; freshwater; brackish; demersal; amphidromous [Riede 2004]; depth range 1 - 6 m [Love et al. 2005].” “Intertidal to at least 6.5 m [Love et al. 2005].” From Nico et al. (2019): “Reproduction does not occur at salinities below 5 ppt, and freshwater populations in the San Joaquin River basin migrate downstream to areas of higher salinity to spawn (Wang 2011).” “In 1967, a fish kill occurred in the San Luis Reservoir, which receives freshwater from the Sacramento-San Joaquin River Delta. About half of the approximately 10,000 fishes killed in this incident were A. flavimanus (Brittan et al. 1970). Apparently another massive die-off occurred in Rodeo Lagoon in 1981 and was thought to be caused by low salinity (<5 ppt) (Wang 1986).” “Recent drought conditions in California have reduced freshwater outflows and may have allowed this goby to gain an advantage over native freshwater and estuarine fishes less able to tolerate high salinity conditions (Herbold et al. 1992, Meng et al. 1994).” From CABI (2018): “Individual fish are commonly found in bays and inlets in water depths between 1 and 14 m (Barnham, 1998).” “A. flavimanus can withstand abrupt changes between fresh and salt water and can survive temperatures greater than 28°C, therefore occupying a broad habitat range from marine to freshwater.” Climate/Range From Froese and Pauly (2018): “Temperate; 52°N - 23°N, 116°E - 143°E” 4 Distribution Outside the United States Native From Froese and Pauly (2018): “Northwest Pacific: Russian Far East (from Amur to Peter the Great Gulf), Korean Peninsula, Bohai Sea, Yellow Sea and East China Sea of China, and Hokkaido to Kyushu of Japan.” Froese and Pauly (2019) report the species as native in the following countries: China (including Hong Kong), Japan, South Korea, Russia, and Vietnam. Introduced Froese and Pauly (2019) report the species as introduced and established in Australia and Mexico. From Fofonoff et al. (2018): “In 1971, a specimen of Acanthogobius flavimanus was collected in Sydney Harbour, New South Wales [Australia]. By 1973, 17 fish had been collected ([…], Hoese 1973). This Goby was found in two locations in New South Wales in the late 1970s, Botany Bay and the Hawkesbury River, in Newcastle (Middleton 1982; Lockett and Gomon 2001). In 1990, it was collected in Port Phillip Bay, Victoria, and was found to be established in the northern part of Bay (Lockett and Gomon 2001). It has not undergone the rapid geographical and population expansion noted in California, perhaps because of warmer temperatures (Lockett and Gomon 2001), and/or of low genetic diversity (Hirase 2017).” From Bray and Gomon (2019): “In April 2019, a Yellowfin Goby was photographed in Port Adelaide, South Australia.” From CABI (2018): “Lever (1996) recorded its presence in Mexico, having spread south to Baja California del Norte.” Means of Introduction Outside the United States From Froese and Pauly (2019): “Accidentally introduced with oyster shipments or in ballast water of ships.” From Bray and Gomon (2019): “The Yellowfin Goby was accidentally introduced to Australia […] when larvae or juveniles were transported in ballast water in ships and the water was released in ports of call.” 5 From CABI (2018): “Local translocation by recreational craft was suggested as one of several possible mechanisms by which A. flavimanus populations in Australia have spread to regions that are not commercial shipping ports (Lockett and Gomon, 2001).” Short Description From CABI (2018): “It has a slender pale-brownish body with a series of dark saddles and spots (Nico and Fuller, 2008). The mid-sides and dorsal fin also have brown patches or spots. Head is of moderate size (28-30% SL), triangular in cross section; interorbital space is narrow and less than eye diameter; mouth oblique, rear end of the jaws just in front and below the middle of eye (NIMPIS, 2002). The arrangement of pores on the head is a key characteristic in identifying this species, with one adjacent to posterior nostril each side, median between rear part of eye, one behind eye, three above each operculum, and two on each preoperculum (NIMPIS, 2002).” “Juvenile fish have pale-yellow ventral and anal fins, whereas all ages possess yellow ventral fins. There are two dorsal fins, first originating
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